《輪胎結(jié)構(gòu)設(shè)計》PPT課件.ppt

FEMApplicationonTireDesign 錦湖輪胎 1 有限要素法介紹2 輪胎結(jié)構(gòu)說明特征3 輪胎結(jié)構(gòu)說明體系4 輪胎結(jié)構(gòu)說明例題5 結(jié)論及希望效果 目錄 有限要素法 FiniteElementMethod 把像輪胎的結(jié)構(gòu)物分割成有限個結(jié)構(gòu)物 對分割的要素各自創(chuàng)建平衡方程式 把這組合到全體要素 對聯(lián)力方程式求近似解 變位 應(yīng)力 變形率 的數(shù)值解析方法 有限要素法不是絕對的性能預(yù)測 而是以相對VersionRanking工具使用 有限要素法定義 有限要素法定義 EquationofMotionGeometry Mesh Node ElementMaterialProperty Rubber E v Cord E EPI AngleBoundaryCondition BasicElasticity 有限要素法正式化 PotentialEnergy VirtualWork FinalEquation 1 Tread2 Carcass3 Belt4 Sidewall5 Bead6 Innerliner7 Capply8 Flipper9 Apex 輪胎結(jié)構(gòu)說明特征 幾何學(xué)的非線性 LargeDeformation SmallStrain X LagrangianStrain O 材料的非線形性 MaterialNon Linearity HyperelasticMaterialModel Moony RivlinModel系列 O OgdenModel系列 經(jīng)濟條件的非線形性 Contact Friction Contactcondition Frictioncondition h p Frictionconstraint 0 slip Penaltymethod Contactconstrainth 0 p 0 nopressure h 0 p 0 contactpressure Lagrangemultipliermethod cr CAD CAE體系現(xiàn)況 KADAS是利用超級電腦 在產(chǎn)品設(shè)計階段預(yù)測輪胎運行性能 即輪胎性能自動預(yù)測系統(tǒng) KADAS是使用了最短點的數(shù)值解析方法 結(jié)構(gòu)解析輪胎耐久力 磨損 牽引力 安全性 乘車感 噪音性能最低化的技術(shù) KADAS為KumhoAutomatedDesignAnalysisSystem的縮略語 是縮短開發(fā)時間 減少開發(fā)費用 提高產(chǎn)品品質(zhì)的技術(shù) KADAS定義 KADAS KADAS 1 2 3 TireonlySmoothtireStaticanalysis TireonlyPatterntireSteadyrolling Tire vehiclePatterntireTransientrolling StrainenergyFootprintpressureSpringrateTemperature Force momentFrictionalenergyModalfrequencyHydroplaning Durability RRRide handlingWear TractionNoise vibration CAD CAEseparationCAEprofessionals CAD CAEinterfaceFewengineers CAD CAEintegrationMostengineers 1995 2000 1 Vector 2001 2006 2 SMP 2007 2010 3 Cluster KADAS KADAS 1 TireStaticAnalysis Simulationitem Strainenergy Footprintpressure Springrate Cordtension Dimension Tirestaticanalysismodel Straindistributionaroundtire TireStaticAnalysis 2 TireThermalAnalysis Simulationitem Temperature Rollingresistance Hysterisislossofrubber Temperaturedistributioninsidetire TireThermalAnalysis 3 TireSteadyRollingAnalysis Simulationitem Force moment Strainenergy Footprintpressure Springrate Cordtension Dimension Tirerollinganalysismodel Tiredeformedshape TireSteadyRollingAnalysis 4 TireModalDynamicAnalysis NVH Noise Vibration andHarshness Simulationitem Modeshape Naturalfrequency Frequencyresponse Tiremodeshape 2ndmode Frequencyresponsefunction FRF TireModalDynamicAnalysis 5 PatternTireRollingAnalysis Simulationitem Force moment PRAT PlysteerResidualAligningTorque Frictionalenergy Footprintpressure Patterntire Force moment PRAT prediction PatternTireRollingAnalysis PatternTireAnalysis 6 TreadSlipAnalysis Simulationitem Force moment PRAT Frictionalenergy Footprintpressure Patternonly Treadslipanalysismodel TRESA Frictionalenergydistribution TreadSlipAnalysis 7 TireExplicitDynamicAnalysis NVH Simulationitem Cleatimpact Cornering Standingwave Drytraction Cleatimpactanalysismodel Tireforcevariationduringcleatimpact CleatImpactAnalysis Standingwave Criticalspeed 7 TireExplicitDynamicAnalysis StandingWaveAnalysis CriticalSpeed Axleforce StandingWaveAnalysis ESCOT ESCOT ESCOT Excellent SmartContourOptimizationTheory Escort 8 TireShapeOptimizationAnalysis Final Proto ESCOT 1 Proto Final ESCOT 2 Final Proto ESCOT 3 ESCOT 3 9 TireFractureAnalysis Global Local Simulationitem Fatiguelifeinbeltedge carcassedge Globalanalysis Localanalysis Fatiguelife 10 TireUniformityAnalysis Uniformity Simulationitem Lowspeeduniformity RFV LFV Input Solving Output Tireuniformitysimulationprocedure TireUniformityAnalysis 11 AircraftTireAnalysis Simulationitem Inflation static steadyrollinganalysis Strainenergydistribution Footprintpressuredistribution 12 TireManu